What is a ASME B16.47 Series A Class 400 Blind Flange?
Blind flanges are used for pipe closures. Flanges are important components in piping that they form connections easily. The flanges have different specifications and classifications. The ASME B16.47 is an American standard that governs flanges of larger diameters, running from NPS 26 to NPS 60. The ASME B16.47 Series A Class 400 blind flange is a medium-level pressure class. There are lower-pressure classes up to class 150 and higher classes up to class 900.
ASME B16.47 Series A Class 400 Blind Flange dimensions, weight and specification
Check Series A Cl 400 BLRF flange dimension and ANSI b16.47 Sr a 400# blank flange pressure rating
Where are ANSI b16.47 sr a 400 lbs blind flanges used?
Ansi b16.47 series A 400Lb blank flanges are used at the end of any pipe to close the flow. Shutting down and reopening the pipes can be a regular operation in a few branches of pipelines in onshore, offshore, oil and gas, food processing, and other applications. The blind flange also has to be selected as per the pressure requirements of the pipelines.
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Are ASME b16.47 series a class 400 blind flange suitable for marine use?
The specification is for larger-diameter pipes. They can come in different materials. There are water lines and oil and gas lines that run underwater. The ASME B16.47 SR A Cl 400 Blind Flange can be used underwater, given that the material is corrosion-resistant against the marine environment. The flanges can be made up of stainless steel, carbon steel, Hastelloy, titanium, inconel, duplex steel, and a lot of other materials. It’s the material that determines whether the flange can be used for marine use or not.
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What is the Series A Class 400 Blind Flange testing procedure?
ANSI B16.47 Series A 400LBS Blank Flange can have a raw materials certificate, 100% radiography test report, and a third-party inspection report from the suppliers. However, the customer can opt to perform the hydrostatic test, ultrasonic tests, mill tests, and visual inspection tests. These tests can be performed with a witness or representative on site or without.
Check the weight of Series A 400 blank flange & ANSI b16.47 sr a 400 lbs BLRF flange dimension and size chart
What temperature can b16.47 sr a 400 lbs BLRF flange withstand?
ASME b16 47 Cl 400 series A blrf flange is supposed to maintain the pressure capacity of class 400, and it can sustain the pressure levels at a temperature range of -10° Celsius to 475° Celsius. The pressure capacity of the flange goes down with increasing temperatures. Within the same class, flanges made up of really high-temperature capable materials such as Inconel and Hastelloy, can stand temperatures exceeding the regular temperatures mentioned above.
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How to choose the right series a class 400 blank flange?
Series A is the general purpose specification, it is the standard for the flanges in the specification. However, the sizes range from 26 inches to 60 inches. The B16.47 400# SR A blind flanges can be chosen to match the fluid flow, the inner diameter of the run pipe, and the pressure capacities needed. The flange can be fitted with a lower pressure class of pipes, but they should never be fitted with pipes that have higher pressure ratings as this would break the flanges or connection.